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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 540d2e577848b2f18d2037e51ccd1beea6d974e0fb6bcc545a45573a5c0e790d. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Formbook


Vendor detections: 14


Intelligence 14 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 540d2e577848b2f18d2037e51ccd1beea6d974e0fb6bcc545a45573a5c0e790d
SHA3-384 hash: f9d3b9b6b83952e80a9de771094d8fc3016c5a97153c75f9a48d9548138ac463bf92377f02b27109947077e8c4573dbe
SHA1 hash: 3551ce6f866465b30412b1e06d922eadc015e63f
MD5 hash: abb0055779e755aed3f7f8a4492925fb
humanhash: georgia-hawaii-twenty-glucose
File name:540d2e577848b2f18d2037e51ccd1beea6d974e0fb6bcc545a45573a5c0e790d
Download: download sample
Signature Formbook
Create hunting rule
File size:1'043'456 bytes
First seen:2026-09-10 11:18:23 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'249 x AgentTesla, 20'539 x Formbook, 12'385 x SnakeKeylogger)
ssdeep 24576:do+KOpQz20S7G6j7sM/oj4cOq3aDSy+rFpAFoQ:d1qTEG6HsM/vlvuyUvAF1
TLSH T1A32512693324FB52D97E17B909B2E33113B20E4ED926D21B8DEECEEB7910B059C45253
TrID 72.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.4% (.EXE) Win64 Executable (generic) (6522/11/2)
4.4% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
121
Origin country :
HU HU
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/88956ea3-d8ba-4fdf-a524-ec753a1597cb/
Malware family:
n/a
ID:
1
File name:
540d2e577848b2f18d2037e51ccd1beea6d974e0fb6bcc545a45573a5c0e790d.zip
Verdict:
No threats detected
Analysis date:
2026-09-10 14:00:49 UTC
Tags:
arch-exec
Link:
https://app.any.run/tasks/b8c05547-7f35-4c5b-bdcc-3afb3486520e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/84967/
Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ac973ea874bb415d07c93be
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/540d2e577848b2f18d2037e51ccd1beea6d974e0fb6bcc545a45573a5c0e790d
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-08-27T05:51:00Z UTC
Last seen:
2026-09-11T23:41:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/540d2e577848b2f18d2037e51ccd1beea6d974e0fb6bcc545a45573a5c0e790d/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ae8beef4-d480-4cb2-8c37-81ad2d955c98
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/540d2e577848b2f18d2037e51ccd1beea6d974e0fb6bcc545a45573a5c0e790d
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.44 Win 32 Exe x86
Link:
https://app.malva.re/file/abb0055779e755aed3f7f8a4492925fb
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/540d2e577848b2f18d2037e51ccd1beea6d974e0fb6bcc545a45573a5c0e790d/
Threat name:
Win32.Trojan.NegaStealer
Create hunting rule
Status:
Malicious
First seen:
2026-08-27 08:16:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
27 of 36 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kqgs4v3yjczpddjag7srzti352tns5ha7nv4yvc2ivltuxaopegq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260910-ne1vpawsbs/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
540d2e577848b2f18d2037e51ccd1beea6d974e0fb6bcc545a45573a5c0e790d
MD5 hash:
abb0055779e755aed3f7f8a4492925fb
SHA1 hash:
3551ce6f866465b30412b1e06d922eadc015e63f
Link:
https://www.unpac.me/results/99869966-5ffc-4e6d-b2a9-d34128fca07a/
SH256 hash:
2b0a3e1c220e8a98eb358a391da117b853882e411df4c9bbf54acc7ae629061f
MD5 hash:
38181717c94e497221567b84b23a75d0
SHA1 hash:
48332b950e1ee5fb10c3ee5eb8705e01e603edda
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/99869966-5ffc-4e6d-b2a9-d34128fca07a/
Parent samples :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 hash:
c6576ef6328030229c6084109ea4cf57525f7ca75af21dd844dabdca0d3a0ecb
MD5 hash:
e66db8e8a5178a837b5e3de16cb6c430
SHA1 hash:
e5bc628354c0fb464d4e748ba226d85aafed9530
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/99869966-5ffc-4e6d-b2a9-d34128fca07a/
SH256 hash:
fe0a9c5940db96687086393d0e620b4a15e07d1e1e912a54167d846637ce8ae9
MD5 hash:
098a30ac7e22920446a41f6fb0a8df4b
SHA1 hash:
aee4c020509227ffbd5c89ab674ce0f8b9f44d76
Link:
https://www.unpac.me/results/99869966-5ffc-4e6d-b2a9-d34128fca07a/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/540d2e577848/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/540d2e577848b2f18d2037e51ccd1beea6d974e0fb6bcc545a45573a5c0e790d

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/84967/

Comments